VALTREX 500mg film-coated tablets medication leaflet

J05AB11 • valaciclovir • Antiinfectives for systemic use | Direct acting antivirals | Nucleosides and nucleotides excl. reverse transcriptase inhibitors

Valacyclovir is an antiviral medication used for the treatment and prevention of infections caused by herpes viruses, including genital herpes, cold sores, and shingles. It is a prodrug of acyclovir, which is active against viruses by inhibiting viral DNA synthesis, thereby preventing viral replication.

The medication is administered orally, usually two or three times daily, depending on the therapeutic indication and the severity of the infection. The dosage is adjusted based on the patient's age, body weight, and renal function.

Common side effects include nausea, headaches, fatigue, and abdominal discomfort. In rare cases, severe adverse reactions such as renal failure, confusion, or allergic reactions may occur.

Valacyclovir is an essential medication for managing herpes infections, helping to reduce symptoms, prevent recurrences, and lower the risk of virus transmission.